GSTDTAP  > 气候变化
DOI10.1111/gcb.13884
Mycorrhizal fungi enhance plant nutrient acquisition and modulate nitrogen loss with variable water regimes
Bowles, Timothy M.1; Jackson, Louise E.2; Cavagnaro, Timothy R.3
2018
发表期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
出版年2018
卷号24期号:1页码:E171-E182
文章类型Article
语种英语
国家USA; Australia
英文摘要

Climate change will alter both the amount and pattern of precipitation and soil water availability, which will directly affect plant growth and nutrient acquisition, and potentially, ecosystem functions like nutrient cycling and losses as well. Given their role in facilitating plant nutrient acquisition and water stress resistance, arbuscular mycorrhizal (AM) fungi may modulate the effects of changing water availability on plants and ecosystem functions. The well-characterized mycorrhizal tomato (Solanum lycopersicum L.) genotype 76R (referred to as MYC+) and the mutant mycorrhiza-defective tomato genotype rmc were grown in microcosms in a glasshouse experiment manipulating both the pattern and amount of water supply in unsterilized field soil. Following 4 weeks of differing water regimes, we tested how AM fungi affected plant productivity and nutrient acquisition, short-term interception of a (NH4+)-N-15 pulse, and inorganic nitrogen (N) leaching from microcosms. AM fungi enhanced plant nutrient acquisition with both lower and more variable water availability, for instance increasing plant P uptake more with a pulsed water supply compared to a regular supply and increasing shoot N concentration more when lower water amounts were applied. Although uptake of the short-term (NH4+)-N-15 pulse was higher in rmc plants, possibly due to higher N demand, AM fungi subtly modulated NO3- leaching, decreasing losses by 54% at low and high water levels in the regular water regime, with small absolute amounts of NO3- leached (<1 kg N/ha). Since this study shows that AM fungi will likely be an important moderator of plant and ecosystem responses to adverse effects of more variable precipitation, management strategies that bolster AM fungal communities may in turn create systems that are more resilient to these changes.


英文关键词arbuscular mycorrhizal fungi climate change drought nitrogen leaching nutrient uptake
领域气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000426506100014
WOS关键词ARBUSCULAR MYCORRHIZAS ; DEFECTIVE MUTANT ; EXTERNAL HYPHAE ; SOIL CARBON ; RESPONSES ; TOMATO ; COLONIZATION ; PHOSPHORUS ; AVAILABILITY ; DROUGHT
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/16846
专题气候变化
资源环境科学
作者单位1.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA;
2.Univ Calif Davis, Dept Land Air & Water Resources, Davis, CA 95616 USA;
3.Univ Adelaide, Waite Res Inst, Sch Agr Food & Wine, Adelaide, SA, Australia
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GB/T 7714
Bowles, Timothy M.,Jackson, Louise E.,Cavagnaro, Timothy R.. Mycorrhizal fungi enhance plant nutrient acquisition and modulate nitrogen loss with variable water regimes[J]. GLOBAL CHANGE BIOLOGY,2018,24(1):E171-E182.
APA Bowles, Timothy M.,Jackson, Louise E.,&Cavagnaro, Timothy R..(2018).Mycorrhizal fungi enhance plant nutrient acquisition and modulate nitrogen loss with variable water regimes.GLOBAL CHANGE BIOLOGY,24(1),E171-E182.
MLA Bowles, Timothy M.,et al."Mycorrhizal fungi enhance plant nutrient acquisition and modulate nitrogen loss with variable water regimes".GLOBAL CHANGE BIOLOGY 24.1(2018):E171-E182.
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